Re: XFS crash on linux raid

[David Chinner <dgc@sgi.com>]

On Fri, May 04, 2007 at 03:25:46PM +0200, Emmanuel Florac wrote:
> Le Fri, 4 May 2007 17:33:44 +1000
> David Chinner <dgc@sgi.com> écrivait:
> 
> > Well, there's your problem. Stack overflows.  IMO, if you use a
> > filesystem, you shouldn't use 4k stacks. ;)
> > 
> > If you remake you kernel with 8k stacks then your problems will
> > most likely go away.
> 
> Well, I've double-checked the asm-i386/module.h, and it actually looks
> like 4K stacks is NOT the default, so I must be using 8K, isn't it?

Yes.

> I've ran the same test on the same machine but WITHOUT software raid-0
> (so write barriers are in use), and all went well, more than 3TB
> written without a glitch. I still think there's something related to
> the write barriers here. I'll try with another RAID controller, Adaptec
> for instance, to get sure the 3ware driver isn't involved. I'll also try
> again with an amd64 kernel.

So you use software raid and you get corruptions, right? I doubt this has
anything to do with write barriers - if it does thats an indication
of broken drivers or hardware.....

Can you run with "-o nobarrier" and no software raid and see if you
still have a problem?

Cheers,

Dave.
-- 
Dave Chinner
Principal Engineer
SGI Australian Software Group